Electromagnetic delay line inductance element
a technology of delay line and inductance element, which is applied in the direction of fixed inductance, inductance, electrical equipment, etc., can solve the problems of significant difficulty in practical use, and deterioration of delay characteristic of electromagnetic delay line compared to that of microstrip line, so as to achieve desired delay characteristic, increase the delay time per specified unit area, and reduce the effect of coupling coefficien
Inactive Publication Date: 2007-02-15
ELMEC
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[0026] According to the present invention thus constituted, each inductor of one section of the electromagnetic delay line is formed in a spiral shape, and each inductor of one section is alternately and vertically connected between the section divided into the first and second inductors in the horizontal direction and the section not divided, and the first inductor is connected with positive coupling to the preceding inductor not divided in the vertical positional relation in series. The second inductor of this section is connected with positive coupling to the following inductor of the section not divided in the vertical positional relation in series. Therefore, the inductance element can easily be made ultra-small, and a connection state between each section is easily made to be a preferable state. When the electromagnetic delay line is constituted, the delay time per specified unit area can be increased, and a desired delay characteristic can be easily obtained.
[0027] Then, the arrangement of the inductors of two sections which are connected with positive coupling in the vertical positional relation is defined as one inductance unit. These inductance units are vertically connected and the adjacent inductance units are dispersed and arranged in the first, second, . . . virtual lines. With this structure, it becomes easy to form a plurality of sections, while obtaining a preferable coupling coefficient, and an increased delay time is realized. BEST MODES FOR CARRYING OUT THE INVENTION
[0028] The preferred embodiments of an inductance element of an electromagnetic delay line of the present invention will be explained hereunder, with reference to the drawings. The same signs and numerals are assigned to the part in common with the conventional art.
[0029]FIG. 1 and FIG. 2 are exploded perspective view showing the embodiments of the inductance element according to the present invention and its equivalent circuit.
[0030] In FIG. 1, a first insulating substrate 15 is formed in an appearance of a slender thin plate from a publicly-known dielectric body, and three inductors L0B, L4A, and L4B are formed on its one side (upper surface).
[0031] Inductors L0B, LA4, and L4B are respectively formed into a quadrilateral spiral shape and alternately wound reversely, and also linearly arranged in a longitudinal direction of the first insulating substrate 15 at prescribed sections.
Problems solved by technology
This increases DC resistance value of the microstrip line, to increase attenuation in a signal, making it difficult to be put into practical use.
However, delay characteristic of this electromagnetic delay line is deemed as being deteriorated compared to that of the microstrip line.
Further, when the delay time is increased by increasing the number of turns of the inductance element 3, the delay characteristic is significantly deteriorated.
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[0028] The preferred embodiments of an inductance element of an electromagnetic delay line of the present invention will be explained hereunder, with reference to the drawings. The same signs and numerals are assigned to the part in common with the conventional art.
[0029]FIG. 1 and FIG. 2 are exploded perspective view showing the embodiments of the inductance element according to the present invention and its equivalent circuit.
[0030] In FIG. 1, a first insulating substrate 15 is formed in an appearance of a slender thin plate from a publicly-known dielectric body, and three inductors L0B, L4A, and L4B are formed on its one side (upper surface).
[0031] Inductors L0B, LA4, and L4B are respectively formed into a quadrilateral spiral shape and alternately wound reversely, and also linearly arranged in a longitudinal direction of the first insulating substrate 15 at prescribed sections.
[0032] The peripheral tip of the inductor L0B is connected to an input terminal 17 at a tip part of...
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To provide an inductance element of a lumped constant type electromagnetic delay line which can easily be made as an ultra-small chip shape and obtain a preferable connection state at each section. Spiral-shaped inductors L0B, L4A, and L4B are formed on a first insulating substrate 15, and inductors L4A and L4B are connected in series. Spiral-shaped inductors L1, L3, and L5 are formed on a second and third insulating substrates 22 and 33. Spiral-shaped inductors L2A, L2B, and L6A are formed on a fourth insulating substrate 41, and the inductors L2A and L2B are connected in series. The first to fourth insulating substrates 15 to 41 are stacked on one another, and the inductors L0B to L6A are vertically connected. The inductors L2A and L2B, and L4A and L4B are divided into two portions in horizontal directions to form one section, and connected with positive coupling to the preceding and the following sections not divided in the horizontal direction.
Description
1. FIELD OF THE INVENTION [0001] The present invention relates to an inductance element of an electromagnetic delay line, and particularly to an improvement of the inductance element suitable for use in a lumped constant type ultra-small electromagnetic delay line. 2. DESCRIPTION OF THE RELATED ART [0002] As an ultra-small electromagnetic delay line of this kind, by using a microstrip line, a simple structure can be easily realized for obtaining a delay time of ins or less. [0003] However, in order to realize the delay time of ins or more, a line length of the microstrip line needs to be increased in proportion to the delay time thus increased. This increases DC resistance value of the microstrip line, to increase attenuation in a signal, making it difficult to be put into practical use. [0004] Therefore, as the electromagnetic delay line featuring the delay time of ins or more, a distribution constant type structure shown in FIG. 4 is proposed. [0005] Specifically, a spiral-shaped ...
Claims
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Login to View More IPC IPC(8): H03H7/18H01F17/00H03H7/30
CPCH01F2017/0026H03H2001/0085H03H7/30
InventorKAMEYA, MASAAKI
OwnerELMEC